CVE catalog
CVE-2025-4215
ublock-origin: CVE-2025-4215
- Severity
- Low · CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.79% · Oct 25, 2026
A vulnerability was found in gorhill uBlock Origin up to 1.63.3b16. It has been classified as problematic. Affected is the function currentStateChanged of the file src/js/1p-filters.js of the component UI. The manipulation leads to inefficient regular expression complexity. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 1.63.3b17 is able to address this issue. The patch is identified as eaedaf5b10d2f7857c6b77fbf7d4a80681d4d46c. It is recommended to upgrade the affected component.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | ublock-origin | sid | 1.67.0+dfsg-1 | fixed |
| Debian | ublock-origin | forky | 1.67.0+dfsg-1 | fixed |
| Debian | ublock-origin | trixie | 1.67.0+dfsg-1~deb13u1 | fixed |
| Debian | ublock-origin | bookworm | 1.67.0+dfsg-1~deb12u1 | fixed |
| Ubuntu | ublock-origin | 16.04 | 1.5.6+dfsg-1 | vulnerable |
| Ubuntu | ublock-origin | 16.04 | 1.6.0+dfsg-1 | vulnerable |
| Ubuntu | ublock-origin | 16.04 | 1.6.6+dfsg-1 | vulnerable |
| Ubuntu | ublock-origin | 18.04 | 1.13.8+dfsg-1 | vulnerable |
| Ubuntu | ublock-origin | 20.04 | 1.19.0+dfsg-2 | vulnerable |
| Ubuntu | ublock-origin | 20.04 | 1.22.2+dfsg-1 | vulnerable |
| Ubuntu | ublock-origin | 22.04 | 1.33.0+dfsg-1build1 | vulnerable |
| Ubuntu | ublock-origin | 22.04 | 1.37.0+dfsg-1 | vulnerable |
| Ubuntu | ublock-origin | 22.04 | 1.39.0+dfsg-2 | vulnerable |
| Ubuntu | ublock-origin | 22.04 | 1.40.2+dfsg-1 | vulnerable |
| Ubuntu | ublock-origin | 24.04 | 1.51.0+dfsg-2 | vulnerable |
| Ubuntu | ublock-origin | 24.04 | 1.52.0+dfsg-1 | vulnerable |
| Ubuntu | ublock-origin | 24.04 | 1.53.3rc0+dfsg-1 | vulnerable |
| Ubuntu | ublock-origin | 24.04 | 1.54.0+dfsg-1 | vulnerable |
| Ubuntu | ublock-origin | 24.04 | 1.55.0+dfsg-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ublock-origin | source | sid | 1.62.0+dfsg-2 | not yet assigned | Not reported | [1104635] |
| Debian | ublock-origin | source | forky | 1.62.0+dfsg-2 | not yet assigned | Not reported | [1104635] |
| Debian | ublock-origin | source | trixie | 1.62.0+dfsg-2 | not yet assigned | Not reported | [1104635] |
| Debian | ublock-origin | source | bookworm | 1.62.0+dfsg-0+deb12u1 | not yet assigned | Not reported | [1104635] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [ublock-origin-doc]Fixed
Source package: [ublock-origin]
Details (2)
1.67.0+dfsg-1~deb12u1· all · bookwormFixed · Fixed:
1.62.0+dfsg-0+deb12u1dsa · ublock-origin · debian · bookworm; dsa · ublock-origin · debian · 12
1.67.0+dfsg-1~deb12u1· all · bookwormFixed · Fixed:
1.62.0+dfsg-0+deb12u1dsa · ublock-origin · debian · bookworm; dsa · ublock-origin · debian · 12
Source package: [ublock-origin]
Details (2)
1.67.0+dfsg-1~deb12u1· all · bookwormFixed · Fixed:
1.62.0+dfsg-0+deb12u1dsa · ublock-origin · debian · bookworm; dsa · ublock-origin · debian · 12
1.67.0+dfsg-1~deb12u1· all · bookwormFixed · Fixed:
1.62.0+dfsg-0+deb12u1dsa · ublock-origin · debian · bookworm; dsa · ublock-origin · debian · 12
- [webext-ublock-origin-firefox]Fixed
Source package: [ublock-origin]
Details (2)
1.67.0+dfsg-1~deb12u1· all · bookwormFixed · Fixed:
1.62.0+dfsg-0+deb12u1dsa · ublock-origin · debian · bookworm; dsa · ublock-origin · debian · 12
1.67.0+dfsg-1~deb12u1· all · bookwormFixed · Fixed:
1.62.0+dfsg-0+deb12u1dsa · ublock-origin · debian · bookworm; dsa · ublock-origin · debian · 12
[Debian 13 (Trixie)]
- [ublock-origin-doc]Fixed
Source package: [ublock-origin]
Details (2)
1.67.0+dfsg-1~deb13u1· all · trixieFixed · Fixed:
1.62.0+dfsg-2dsa · ublock-origin · debian · 13
1.67.0+dfsg-1~deb13u1· all · trixieFixed · Fixed:
1.62.0+dfsg-2dsa · ublock-origin · debian · 13
Source package: [ublock-origin]
Details (2)
1.67.0+dfsg-1~deb13u1· all · trixieFixed · Fixed:
1.62.0+dfsg-2dsa · ublock-origin · debian · 13
1.67.0+dfsg-1~deb13u1· all · trixieFixed · Fixed:
1.62.0+dfsg-2dsa · ublock-origin · debian · 13
- [webext-ublock-origin-firefox]Fixed
Source package: [ublock-origin]
Details (2)
1.67.0+dfsg-1~deb13u1· all · trixieFixed · Fixed:
1.62.0+dfsg-2dsa · ublock-origin · debian · 13
1.67.0+dfsg-1~deb13u1· all · trixieFixed · Fixed:
1.62.0+dfsg-2dsa · ublock-origin · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2025-4215]
- [https://osv.dev/vulnerability/DLA-4215-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2025-4215]
- [https://security-tracker.debian.org/tracker/CVE-2025-4215]
- [https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-4215.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]